How to make it

1

In a small bowl, whisk the first seven ingredients. Add mushroom caps; let stand for 15 minutes, turning twice.

2

Drain and reserve marinade. Using long-handled tongs, dip a paper towel in cooking oil and lightly coat the grill rack. Grill mushrooms, covered, over medium heat or broil 4 in. from the heat for 6-8 minutes on each side or until tender, basting with reserved marinade. Top with cheese during the last 2 minutes. Serve on buns with lettuce and tomato.